Cord-tightener for window-curtains



UNITED STATES PATENT OFFICE.

MICHAEL HEY, 0F PHILADELPHIA, PENNSYLVANIA.

CORD-TIGHTENER FOR WINDOW-CURTAINS.

Specification forming part of Letters Patent No. 51,045, (lated Novemer 21, 1865.

To all whom it may concern.'

Be it known that I, MICHAEL HEY, of the city oi'Philadelphia., in the State of Pennsylvania, have inventedanew and useful Improvement in Cord-Tightners for Vindow-Curtains; and I do hereby declare that the following is a full, clear, and Iexact description of the construction and operation of the same, reference being had to the accompanying drawing, making a part of this specification, and to the letters of reference marked thereon.

Of all the different cord-tighteners for adjusting` the position of a window curtain or shade suspended from a roller, I believe there is not one that is both reliable for the purpose and at the same time capable of being easily operated, not liable to get easily out oforder; and the object oi' my inventionis to produce a tightener that will meet the requirements.

rIhe nature of my invention consists, substantially as hereinafter described, in the employment of a screw arranged and secured vertically between two stationary brackets connected together by means of a suitable case or frame, so as to support and at the same time allow the said screw to be easily rotated in either direction,in combination with a traversing block having the usual cord button or pulley rigidly attached thereto.

In the drawing, A is the screw B, the frame or case, C, the traversing block, and D the cord-button. r

Construction: The screw A is about three inches long and three-sixteenths of an inch iu diameter, more or less, and has permanently fixed to each of its ends a thumb and finger knob, a', each provided with a shoulder, a2, for keeping it in place between the ends of the case or fram e. The case B is, in this instance, a hollow cylinder which has a longitudinal slot or opening, b', from end to end, and is provided with two brackets, b2 b2, by which it can be readily screwed fast toa window-frame in a suitable vertical position. The block C, which traverses the screw A, is made so that it will freely pass np 0r down within the case or. frame B when the said screw A is being rotated accordingly, Mand is prevented from turning round with the screw by means of the stem of the cord-button D, which connects the block C and button D together, the said stem being made to pass freely up or down in the slot as the block and button are moved by the screw.

Operation: When this device is screwed fast to the window-casing and the tension-cord of the curtain or shade roller applied under the button D, any required degree ot' tension can be applied to the said cord simply by rotating the screw A, and it is obvious that there cannot occur any variation or slipping of the button, that it will be entirely effective and reliable for the purpose, and not liable t0 get easily out of order by use.

Having thus fully described my improved oord-tightener, what I claim as new therein of my invention, and desire to secure by Letters Patent, is-

Ihe employment of the screw A, block, C, and button D, in combination with a suitable frame or case, B, the same being constructed and arranged to operate together when applied, as and for the purpose described.

MICHAEL HEY.

Witnesses:

BENJ. MORRISON,

JAs. WINsMoRE. 

